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| 1 | Removal of Cs+ from water and soil by ammonium-pillared montmorillonite/Fe3O4 composite显示文摘To remove cesium ions from water and soil, a novel adsorbent was synthesized by following a one-step co-precipitation method and using non-toxic raw materials. By combining ammonium-pillared montmorillonite(MMT) and magnetic nanoparticles(Fe_3O_4), an MMT/Fe_3O_4 composite was prepared and characterized. The adsorbent exhibited high selectivity of Cs^+ and could be rapidly separated from the mixed solution under an external magnetic field. Above all, the adsorbent had high removal efficiency in cesium-contaminated samples(water and soil) and also showed good recycling performance, indicating that the MMT/Fe_3O_4 composite could be widely applied to the remediation of cesium-contaminated environments. It was observed that the pH, solid/liquid ratio and initial concentration affected adsorption capacity. In the presence of coexisting ions, the adsorption capacity decreased in the order of Ca^(2+)> Mg^(2+)> K^+> Na^+, which is consistent with our theoretical prediction. The adsorption behavior of this new adsorbent could be expressed by the pseudo-second-order model and Freundlich isotherm. In addition, the adsorption mechanism of Cs^+ was NH_4^+ ion exchange and surface hydroxyl group coordination, with the former being more predominant. | Xianming Zheng Junfeng Dou Jing Yuan Wei Qin Xiaoxi Hong Aizhong Ding | 2017 | Journal of Environmental Sciences2017，29，6： | 10 |
| 2 | The effect of low-molecular-weight organic-acids(LMWOAs)on treatment of chromium-contaminated soils by compost-phytoremediation: Kinetics of the chromium release and fractionation显示文摘A soil–plant biological system was developed from chromium(Cr) polluted soil treated by the compost-phytoremediation method. The transformation and migration of the Cr in this system is comprehensively studied in this research. The results illustrated that the co-composting treatment can reduce the Cr availability from 39%(F1 was about 31% of total, F2 was about 8% of total) to less than 2% by stabilizing the Cr. However, herbaceous plants can accumulate the concentrations of Cr from 113.8 to 265.2 mg/kg in the two crops,even though the concentration of soluble Cr in the substrate soil was below 0.1 mg/L.Cr can be assimilated and easily transferred in the tissues of plants because the lowmolecular-weight organic-acids(LMWOAs) derived from the plant root increase the bioavailability of Cr. The amount of extracted Cr dramatically increased when the organic acids were substituted in this order: citric acid > malic acid > tartaric acid > oxalic acid >acetic acid. On average the maximum(147.4 mg/kg) and the minimum(78.75 mg/kg) Cr were extracted by 20 mmol/L citric acid and acetic acid, respectively. The desorption of Cr in different acid solutions can be predicted by the pseudo second-order kinetics. The exchangeable Cr, carbonate-bound Cr, and residual Cr decreased, while Fe–Mn oxide bound Cr and organic bound Cr increased in the soil solid phase. According to the experimental results, the organic acids will promote the desorption and chelation processes of Cr, leading to the remobilization of Cr in the soil. | Huixia Chen Junfeng Dou Hongbin Xu | 2018 | Journal of Environmental Sciences2018，30，8： | 8 |
| 3 | Anaerobic BTEX degradation in soil bioaugmented with mixed consortia under nitrate reducing conditions显示文摘包括苯,甲苯,乙醇苯,和三二甲苯异构体, BTEX 的不同集中被增加进土壤样品在减少条件的硝酸盐下面由扩充改编 BTEX 的协会调查厌氧的降级潜力。所有 BTEX 底层能是厌氧的当起始的集中在在土壤的 100 mg/kg 下面时,联盟者简历在 70 d 以内降级了到非可检测的层次。甲苯比降级率的顺序是的任何另外的 BTEX 混合物,和 high-to-low 快被降级 toluene>ethylbenzene>m-xylene>o-xylene>benzene>p-xylene.Nitrite 与硝酸盐减小被积累,但是亚硝酸根的累积没在整个整个孵化在 BTEX 的降级上有禁止的效果。在土壤的土生土长的细菌能提高充实的混合细菌的 BTEX 简历降级能力。当六 BTEX 混合物同时是在土壤的现在时,他们有更低的起始的集中的降级上没有明显的禁止的效果。或者,苯,o二甲苯,和p二甲苯降级与 300 mg/kg.Higher BTEX 简历降级的更高起始的集中被禁止率与一个单身者的存在相比与钠醋酸盐的增加在土壤样品被观察 BTEX 底层,并且主要底层的刺激或 BTEX 简历降级的 cometabolic 改进的假设似乎可能。 | DOU Junfeng LIU Xiang HU Zhifeng | 2008 | Journal of Environmental Sciences2008，20，5： | 6 |
| 4 | Anaerobic benzene biodegradation by a pure bacterial culture of Bacillus cereus under nitrate reducing conditions显示文摘A pure culture using benzene as sole carbon and energy sources was isolated by screening procedure from gasoline contaminated soil.The analysis of the 16S rDNA gene sequence,morphological and physiological characteristics showed that the isolated strain was a member of genus Bacillus cereus.The biodegradation performance of benzene by B.cereus was evaluated,and the results showed that benzene could be efficiently biodegraded when the initial benzene concentration was below 150 mg/L.The metabolites of anaerobic nitrate-dependent benzene oxidation by strain B.cereus were identified as phenol and benzoate.The results of substrate interaction between binary combinations for benzene,phenol and benzoate showed that the simultaneous presence of benzene stimulated the degradation of benzoate,whereas the addition of benzene inhibited the degradation of phenol.Benzene degradation by B.cereus was enhanced by the addition of phenol and benzoate,the enhanced effects were more pronounced at higher concentration.To our knowledge,this is the first report that the isolated bacterial culture of B.cereus can efficiently degraded benzene under nitrate reducing conditions. | Junfeng Dou Aizhong Ding Xiang Liu Yongchao Du Dong Deng Jinsheng Wang | 2010 | Journal of Environmental Sciences2010，22，5： | 6 |
| 5 | Who Plays the Key Role among Shanghai,Shenzhen and Hong Kong Stock Markets?显示文摘在这份报纸,我们从 2000 年 1 月检验上海,深圳和香港的每日的频率证券市场指数到 2012 年 6 月,并且使用 Morlet 小浪连贯模型决定谁在中国的金融市场正在起最重要的作用。我们发现在在中等、长的跑的这些证券市场之间有重要 comovements。这向投资者提供机会增加他们的大写的获得。香港证券市场长远来说起主要作用,但是它的领导人位置被快成长的中国大陆证券市场威胁,特别上海股票交易所。基于我们的分析,下列建议适用于中国证券市场:在中国大陆建立并且改善国际、地区性的金融中心;鼓励更合格的机构的投资者;在香港,上海和深圳之中重新定位市场关系;并且增加解除管制和国际化加快金融资源的集成。 | Jian Wang Junfeng Zhu Feifei Dou | 2012 | China & World Economy2012，20，6： | 3 |
| 6 | β-Elemene-loaded polymeric micelles intensify anti-carcinoma efficacy and alleviate side effects显示文摘β-Elemene is a volatile oil used for the treatment of cancer,but poor solubility,low bioavailability,and various adverse reactions limit its application.For amelio rating risks of the venous toxicity ofβ-elemene,intravenously injectable micelle ofβ-elemene was prepared using the thin-film hydration method.The results pointed out the micelles were uniformly spherical with about 20.96±0.1966 nm in average diameter and exhibited high entrapment efficiency(99.02%±0.88%).As revealed by drug release studies in vitro,β-elemene micelles had sustained drug release.Compared with freeβ-elemene,the micelles increased the drug cellular uptake and enhanced the anti-tumor effect in vitro through retarding cell cycle and inducing apoptosis.Meanwhile,the elevated se rum stability o fβ-elemene micelles implied less drug leakage and reduced toxicity.The wound healing and tube formation assay in vitro demonstrated the anti-metastasis and anti-angiogenesis effects ofβ-elemene micelles.Moreover,the pharmacokinetics study showed the AUC and T1/2 ofβ-elemene in micelle group were 1.79 and 1.62 times of that in free fi-elemene group,suggesting the circulation time ofβ-elemene in the blood had been prolonged.In addition,β-elemene micelles showed a favorable antitumor response compared with theβ-elemene solution on C26 colon cance r-bearing mice model.Local irritation study investigated in rabbits indicated that theβ-elemene micelles strikingly mitigated the irritation to the injection sites compared with freeβ-elemene.These results proved that the micelle could be a good candidate as an auspicious drug delivery system ofβ-elemene for the prospective clinical treatment of carcinoma. | Qiaoqiao Hu Lan Bai Zejiang Zhu Zhengying Su Peng Bai Minghai Tang Caixia Dou Junfeng Yan Rongsheng Tong Wuyu Zhang Lijuan Chen Lulu Cai | 2020 | Chinese Chemical Letters2020，31，3： | 2 |
| 7 | Whole cell bioreporter application for rapid detection and evaluation of crude oil spill in seawater caused by Dalian oil tank explosion显示文摘 | Dayi Zhang Aizhong Ding Shuangchao Cui Cheng Hu Steven F. Thornton Junfeng Dou Yujiao Sun Wei E. Huang | 2012 | Water Research2012，，： | 1 |
| 8 | Anaerobic degradation of naphthalene by the mixed bacteria under nitrate reducing conditions 显示文摘 | DOU Junfeng LIU Xiang DING Aizhoug | 2009 | Journal of Hazardous Materials2009，165，： | 1 |
| 9 | Substrate interactions during anaerobic biodegradation of BTEX by the mixed cultures under nitrate reducing conditions显示文摘 | Dou Junfeng Liu Xiang Deng Dong | 2008 | Journal of Hazardous Materials2008，158，23： | 1 |
| 10 | Anaerobic biodegradation of BTEX linked to nitrate and sulfate reduction显示文摘 | Dou Junfeng Liu Xiang Hu Zhifeng | 2008 | Journal of Hazardous Materials2008，151，23： | 1 |
| 11 | Kinetic analysis of anaerobic phosphorus release during biological phosphorus removal process显示文摘Enhanced biological phosphorus removal(EBPR)is a commonly used and sustainable method for phosphorus removal from wastewater.Poly-β-hydroxybutyrate(PHB),polyphosphate,and glycogen are three kinds of intracellular storage polymers in phosphorus accumulation organisms.The variation of these polymers under different conditions has an apparent influence on anaerobic phosphorus release,which is very important for controlling the performance of EBPR.To obtain the mechanism and kinetic character of anaerobic phosphorus release,a series of batch experiments were performed using the excessively aerated sludge from the aerobic unit of the biological phosphorus removal system in this study.The results showed that the volatile suspended solid(VSS)had an increasing trend,while the mixed liquid suspended sludge(MLSS)and ashes were reduced during the anaerobic phosphorus release process.The interruption of anaerobic HAc-uptake and phosphorus-release occurs when the glycogen in the phosphorus-accumulating-organisms is exhausted.Under the condition of lower initial HAc-COD,HAc became the limiting factor after some time for anaerobic HAc uptake.Under the condition of higher initial HAc-COD,HAc uptake was stopped because of the depletion of glyco-gen in the microorganisms.The mean ratio ofΔ_(ρP)/Δ_(ρPHB),Δ_(ρ)GLY/ΔρPHB,Δ_(ρP)/ΔCOD,andΔ_(ρPHB)/ΔCOD was 0.48,0.50,0.44,and 0.92,respectively,which was nearly the same as the theoretical value.The calibrated kinetic parameters of the HAc-uptake and phosphorus-release model were evaluated as follows:QHAc,max was 164 mg/(g·h),QP,max was 69.9 mg/(g·h),Kgly was 0.005,and KCOD was 3 mg/L.An apparently linear correlation was observed between the ratio ofΔ_(ρP)/ΔCOD and pH of the solution,and the equation between them was obtained in this study.Enhanced biological phosphorus removal(EBPR)is a commonly used and sustainable method for phosphorus removal from wastewater.Poly-β-hydroxybutyrate(PHB),polyphosphate,and glycogen are three kinds of intracellular storage polymers in phosphorus accumulation organisms.The variation of these polymers under different conditions has an apparent influence on anaerobic phosphorus release,which is very important for controlling the performance of EBPR.To obtain the mechanism and kinetic character of anaerobic phosphorus release,a series of batch experiments were performed using the excessively aerated sludge from the aerobic unit of the biological phosphorus removal system in this study. | DOU Junfeng LUO Guyuan LIU Xiang | 2007 | Frontiers of Environmental Science & Engineering2007，1，2： | 1 |
| 12 | GENERALIZED PRECONDITIONED HERMITIAN AND SKEW-HERMITIAN SPLITTING METHODS FOR NON-HERMITIAN POSITIVE-DEFINITE LINEAR SYSTEMS显示文摘在切开的这份报纸,概括 preconditioned Hermitian 和 skew-Hermitian (GPHSS ) 积极明确的矩阵被学习的为 non-Hermitian 的重复方法,它盖住切开的标准 Hermitian 和 skew-Hermitian (HSS ) 重复并且另外许多存在变体。理论分析给上面的界限为光谱重复矩阵的半径。舞会实际观点,我们分析了并且实现切开的不精确的概括 preconditioned Hermitian 和 skew-Hermitian (IGPHSS ) 重复,它作为它的内部过程采用 Krylov subspace 方法。从 GPHSS 和 IGPHSS 重复与标准 HSS 重复和 AHSS 重复有效、竞争的三维的传送对流散开方程表演的数字实验。 | Junfeng Yin Quanyu Dou | 2012 | Journal of Computational Mathematics2012，30，4： | 1 |
| 13 | Anaerobic BTEX biodegradation linked to nitrate and sulfate reduction显示文摘 | DOU Junfeng LIU Xiang HU Zhifeng | 2008 | Journal of Hazardous Materials2008，151，23： | 1 |
| 14 | Lightweight diamond/Cu interface tuning for outstanding heat conduction显示文摘With rapid developments in the field of very large-scale integrated circuits,heat dissipation has emerged as a significant factor that restricts the high-density integration of chips.Due to their high thermal conductivity and low thermal expansion coefficient,diamond/Cu composites have attracted considerable attention as a promising thermal management material.In this study,a surface tungsten carbide gradient layer coating of diamond particles has been realized using comprehensive magnetron sputtering technology and a heat treatment process.Diamond/Cu composites were prepared using high-temperature and high-pressure technology.The results show that,by adjusting the heat treatment process,tungsten carbide and di-tungsten carbide are generated by an in situ reaction at the tungsten–diamond interface,and W–WC–W_(2)C gradient layer-coated diamond particles were obtained.The diamond/Cu composites were sintered by high-temperature and high-pressure technology,and the density of surface-modified diamond/Cu composites was less than 4 g cm^(-3).The W–WC–W_(2)C@diamond/Cu composites have a thermal diffusivity as high as 331 mm^(2)s^(-1),and their thermal expansion coefficient is as low as 1.76×10^(-6)K^(-1).The interface coherent structure of the gradient layer-coated diamond/copper composite can effectively improve the interface heat transport efficiency. | Wenjie Dou Congxu Zhu Xiwang Wu Xun Yang Wenjun Fa Yange Zhang Junfeng Tong Guangshan Zhu Zhi Zheng | 2023 | Carbon Energy2023，5，12： | 0 |
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